PRODUCTION METHOD OF RECONSTITUTED TEA Russian patent published in 2009 - IPC A23F3/40 

FIELD: food products.

SUBSTANCE: black currant leaves are sequentially extracted by liquid carbon dioxide and drinking water with obtaining CO₂-miscella and water extract. Tea refuses are mixed with liquid carbon dioxide. They are extracted and minced along with periodic depressurisation of extraction mixture below carbon dioxide vapour pressure at extraction temperature. Miscella and extraction cake are separated. The obtained miscellas are joined. The latter is dissolved in water solution of edible acid. Calciferous or magnesium salt of carbonic acid and water extract of blackcurrant leaves is added to suspension. Then it is formed, dried till residual humidity 13-15%, cut, and impregnated with CO₂ miscella with simultaneous pressure boost. Then pressure is released to atmosphere with simultaneous freezing of soaked carbon dioxide and the last is sublimated to obtain the target product in the leftover.

EFFECT: production of reconstituted flavoured tea out of tea production refuses with complete usage of mentioned refuses.